High resolution displays and GNOME

Didn't the original Sun Windows from SunOS 4 also use Display Postscript. The major problem was that both NeXT and Sun (and the other Unix vendors) had the patent and other rights to use Postscript under proprietary licenses with Adobe which made using it in MIT/X or similar things impossible. [Each OS doing so also implemented it in a way that you couldn't get it to work on another system with some sort of "Display Postscript" which ended its usefulness for hackers.]